S&S, L81-99 Heavy Duty connecting rod assembly
Heavy Duty S&S connecting rod assemblies have a stronger than stock construction. Manufactured from drop forged 4140 chrome moly steel. Designed to be used as heavy duty replacements for stock or modified engines. Complete with crankpin; crankpin nuts; woodruff key; cages and rollers. Ready to install. Note: With wristpin bushing installed; reamed to L81-83 Shovelhead OEM .791" diameter. For use in 84-99 Evo Big Twin models wristpin bushing must be reamed to OEM .792" OEM size. Note: See 508664 for identical connecting rod assembly with wristpin bushing reamed to 84-99 Evo B.T. OEM .792" diameter. Note: Comes with steel cages. Note: S&S rods are clearanced for strokes up to and including 5". The connecting rod assemblies come complete with crankpin; nuts and with a 17 roller alloy type cage crankpin bearing set. All S&S connecting rods are a somewhat heavier than stock due to a beefier construction. Flywheel rebalancing is recommended. Rebalancing may be extra work; but S&S decided not to sacrifice rod strength for convenience''s sake. All rod lengths are same as stock (7.440" center to center for Big Twin models).
Ça dépend de ta localisation et de ce que tu as commandé. Voici les délais estimés :
- France : livraison en 3 à 7 jours ouvrés.
- Europe & international : livraison en 7 à 10 jours ouvrés.
Certains produits sont en stock, d’autres non. On travaille avec plusieurs niveaux de stock :
- En stock : expédition sous 24h / 48h.
- Stock européen : expédition sous 48h / 72h.
- Stock USA : expédition sous 3 à 5 semaines.
- Précommande avec ETA : expédition selon la date estimée.
- Sur commande avec délai spécifique : expédition en fonction de la disponibilité.
Estimated carrier transit times are:
- France: 1–5 business days
- Most European destinations: 5–10 business days
- Countries outside the European Union: delivery times may vary depending on the destination and customs clearance
The dispatch estimate and carrier transit time are separate.
Compatibility
You can verify compatibility in two ways:
- Use the vehicle selector on the product page to check whether the part matches your motorcycle.
- Review the fitment table for the full list of compatible models and years.
Some parts may require additional components, modifications or a specific existing setup. Always read the fitment notes and product description before ordering.
Still unsure? Contact us with:
- motorcycle make and model;
- model year;
- exact version or trim;
- current modifications;
- product reference or link.
Our team will help you confirm compatibility before ordering.
Eligible items may be returned within 30 days of delivery.
To be accepted, the item must be:
- unused and uninstalled;
- in its original condition;
- returned with its original packaging, labels and accessories.
Parts that have been installed, damaged or modified cannot be returned.
Please contact us before sending an item back. Returns sent without prior authorization may not be accepted.
Return shipping costs remain the customer’s responsibility unless the item received is incorrect, damaged or defective.
Droits de douane & taxes
European Union
Orders delivered within the European Union are shipped from France. No import duties are charged upon delivery.
Countries outside the European Union
Local VAT, customs duties and carrier clearance fees may apply. These charges are determined by the destination country and remain the customer’s responsibility.
Payment Options
We accept major credit and debit cards, PayPal and the installment payment methods displayed at checkout.
Eligible orders may be paid in 3 or 4 installments, subject to the payment provider’s approval and applicable limits.

